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* [PATCH] ASoC: rsnd: don't call free_irq() on Parent SSI
@ 2017-05-16  1:48 Kuninori Morimoto
  2017-05-17  8:11 ` Kuninori Morimoto
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Kuninori Morimoto @ 2017-05-16  1:48 UTC (permalink / raw)
  To: Mark Brown; +Cc: linux-renesas-soc, Linux-ALSA, Simon, Hiroyuki Yokoyama


From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

If SSI uses shared pin, some SSI will be used as parent SSI.
Then, normal SSI's remove and Parent SSI's remove
(these are same SSI) will be called when unbind or remove timing.
In this case, free_irq() will be called twice.
This patch solve this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
---
 sound/soc/sh/rcar/ssi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 5960042..e23fcab 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -726,6 +726,11 @@ static int rsnd_ssi_dma_remove(struct rsnd_mod *mod,
 			       struct rsnd_priv *priv)
 {
 	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+	struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
+
+	/* Do nothing for SSI parent mod */
+	if (ssi_parent_mod == mod)
+		return 0;
 
 	/* PIO will request IRQ again */
 	free_irq(ssi->irq, mod);
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2017-06-13 23:53 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-05-16  1:48 [PATCH] ASoC: rsnd: don't call free_irq() on Parent SSI Kuninori Morimoto
2017-05-17  8:11 ` Kuninori Morimoto
2017-05-19 17:03 ` Applied "ASoC: rsnd: don't call free_irq() on Parent SSI" to the asoc tree Mark Brown
2017-06-12  0:45   ` Kuninori Morimoto
2017-06-13 18:41     ` Mark Brown
2017-06-13 23:53       ` Kuninori Morimoto
2017-06-13 21:08 ` Mark Brown

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